package leetcode100;

// TODO 链表节点: ListNode

public class TreeNode {
    
    int val;
      
    TreeNode left;
      
    TreeNode right;
      
    TreeNode() {
        
    }
    
    TreeNode(int val) { 
        this.val = val; 
    }
      
    TreeNode(int val, TreeNode left, TreeNode right) {
        this.val = val;
        this.left = left;
        this.right = right;
    }
      
}